The first giant Herrenknecht is on a ship on its way to Melbourne port:

The 15.6m diameter TBMs will take around 6 months to assemble on site, with the parts lowered into the ground by a massive a 550-tonne gantry crane. The TBMs will then work day and night digging the 6.5km twin tunnels from Watsonia to Bulleen – taking traffic under, instead of through, suburbs.

https://bigbuild.vic.gov.au/news/north-east-link-program/tunnel-boring-machine-sets-sail